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(No Model.)

M. RANDOLPH.

JOURNAL BEARING.

No. 356,332. Patented Jan. 18, 1887.

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V%%ENTOH' I WITNESSE N. PETERS. Fhclo-Lilhugmphcr. Washington D c.

UNITED STATES PATENT OFFICE.

MAHLON RANDOLPH, OF NEW YORK, N. Y., ASSIGNOR TO THE RANDOLPH MANUFAOTURINGCOMPANY, OF NEW YORK.

JOURNAL-BEARING.

SPECIFICATION forming part of Letters Patent No. 356,332, dated January 18. 1887.

Application filed September 29, 1886. Serial No. 214,877. (No model.)

To all whom it may concern:

Be it known that I, MAHLON RANDOLPH, of the city, county, and State of New York, have invented a new and useful Improvement in Metallic Cases or Housings for Plastic Bushings for Journal-Bearings; and I hereby declare the following to be a full and clear de scription thereof.

This invention relates to a metallic casing 01'' housing adapted to receive and hold in place a bushing formed of any suitable plastic materialsuch as plumbagocombined with a holding fiber and a cementing material, so as to adapt the whole structure to the purposes of ajournal-bearing.

The invention will be readily understood by reference to the accompanying drawings, of which Figure 1 is a perspective view of a railway-car box, showing the bottom side of the same. Figs. 2 and 3 are detailed Views showing equivalent forms of the locking-lugs of case. Fig. 4 is a sectional elevation of the box fitted to a car-axle, the dotted line 00 as indicating the position of the face of the lug or stop, the said dotted line also cutting the shoulder and collar of the axle, so as to clearly indicate the office of said lug to act as a stop to prevent the end-thrust of the axle from injuring the plastic bushing of the box.

The metallic case or housing Ais madein any suitable form. The drawings present three different types of the case, adapted toas many different departments or forms of service. In either form the case A is adapted to receive and hold in place a plastic bushing, 13, which forms the j ournal-bearing proper. This bushing is formed of an anti-friction compound, the lubricating properties of which are plumbago, mica, or some similar material, and which is put into the caseAin a plastic form and then allowed to indurate, soas to form thereof a solid, substantial, and durable journal-bear- 1mg.

- The inner face or surface of the case A ad- 5 j acent to the bushing material is provided with a series of ribs, a, best made in dovetailed form, as shown in the drawings; or, in lieu of these, projecting pins or lugs, as in Figs. 2 and 3, are adapted to receive and hold in place in the case A the bushing material B. It is not essential that the said ribs be made in dovetailed form, as rectangular formations are also well adapted to the purpose; but for most cases the dovetailed form is the best. 5 5

The ribs a are made somewhat shorter than the box, as at a" a in Fig. 1, thereby allowing a portion of the bushing material B to be interposed between the end of the said rib and the wearing flange or collar of the axle. This secures absolute freedom from friction at the ends of the bushing material, and still utilizes the longitudinal strength of the rib a to resist end-thrust against thejournal-bearing; but in this case the resistance to end-thrust is Wholly 6 5 7 taken by the bushing material, or rather in the thrust movement this forcewill be taken up by the cushion formed of the bushing material B, which is interposed between the thrust ring or flange of the axle and the ends of the said holding ribs a.

Having described my invention, I claim- A journal-bearing formed of a metallic case having projections on its inner face of less length than the bearing and an inner wearing-bushing of a plastic anti-friction material covering and secured by said ribs, whereby there is provided a yielding cushion adapted to receive end shocks from the flanges and collars of j ournals running in said bearings, substantially as described and shown.

MAHLON RANDOLPH.

Witnesses: I

WM. E. RICHARDS, W. I. GRAHAM. 

